BREATHABLE WARMTH FOR THE FIELD. Dri-FIT technology helps you stay dry, comfortable and focused. Stretchy, unbrushed fabric fits close to your arms and invisible thumb loops help hold your sleeves in place. The curved hem creates a comfortable, flattering fit made for speed. Body fabric has a lightly brushed interior to help keep your core warm. The 1/4-length zipper lets you adjust your ventilation. 100% recycled polyester.